<template>
    <div>
        <!-- 面包屑导航区 -->
        <el-breadcrumb separator-class="el-icon-arrow-right">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>用户管理</el-breadcrumb-item>
            <el-breadcrumb-item>用户列表</el-breadcrumb-item>
        </el-breadcrumb>

        <!-- 卡片视图区 -->
        <el-card class="box-card">
            <!-- 搜索与添加区域 -->
            <el-row :gutter="20">
                <el-col :span="7">
                    <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">
                        <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
                    </el-input>
                </el-col>
                <el-col :span="4">
                    <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
                </el-col>
            </el-row>
            <!-- 用户列表区域 -->
            <el-table :data="userlist" border stripe>
                <el-table-column type="index" label="#"></el-table-column>
                <el-table-column label="姓名" prop="username"></el-table-column>
                <el-table-column label="邮箱" prop="email"></el-table-column>
                <el-table-column label="电话" prop="mobile"></el-table-column>
                <el-table-column label="角色" prop="role_name"></el-table-column>
                <el-table-column label="状态">
                    <template slot-scope="scope">
                        <el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row)">
                        </el-switch>
                    </template>
                </el-table-column>
                <el-table-column label="操作" width="180px" stripe>
                    <template slot-scope="scope">
                        <!-- 修改按钮 -->
                        <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)"></el-button>
                        <!-- 删除按钮 -->
                        <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserById(scope.row.id)"></el-button>
                        <!-- 分配角色按钮 -->
                        <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
                            <el-button type="warning" icon="el-icon-setting" size="mini" @click="setRole(scope.row)"></el-button>
                        </el-tooltip>
                    </template>
                </el-table-column>
            </el-table>
            <!-- 分页区域 -->
            <el-pagination
                    @size-change="handleSizeChange"
                    @current-change="handleCurrentChange"
                    :current-page="queryInfo.pagenum"
                    :page-sizes="[1, 2, 5, 10]"
                    :page-size="queryInfo.pagesize"
                    layout="total, sizes, prev, pager, next, jumper"
                    :total="total">
            </el-pagination>
        </el-card>

        <!-- 添加用户的对话框 -->
        <el-dialog title="添加用户" :visible.sync="addDialogVisible" width="50%" :close-on-click-modal="false" @close="addDialogClosed">
            <!-- 内容主体区域 -->
            <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
                <el-form-item label="用户名" prop="username">
                    <el-input v-model="addForm.username"></el-input>
                </el-form-item>
                <el-form-item label="密码" prop="password">
                    <el-input v-model="addForm.password"></el-input>
                </el-form-item>
                <el-form-item label="邮箱" prop="email">
                    <el-input v-model="addForm.email"></el-input>
                </el-form-item>
                <el-form-item label="手机" prop="mobile">
                    <el-input v-model="addForm.mobile"></el-input>
                </el-form-item>
            </el-form>

            <!-- 底部区域 -->
            <span slot="footer" class="dialog-footer">
                <el-button @click="addDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="addUser">确 定</el-button>
            </span>
        </el-dialog>

        <!-- 修改用户的对话框 -->
        <el-dialog title="修改用户" :visible.sync="editDialogVisible" width="50%" @close="editDialogClosed" :close-on-click-modal="false">
            <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
                <el-form-item label="用户名">
                    <el-input v-model="editForm.username" disabled></el-input>
                </el-form-item>
                <el-form-item label="邮箱" prop="email">
                    <el-input v-model="editForm.email"></el-input>
                </el-form-item>
                <el-form-item label="手机" prop="mobile">
                    <el-input v-model="editForm.mobile"></el-input>
                </el-form-item>
            </el-form>

            <span slot="footer" class="dialog-footer">
                <el-button @click="editDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="editUserInfo">确 定</el-button>
            </span>
        </el-dialog>

        <!-- 分配角色的对话框 -->
        <el-dialog title="分配角色" :visible.sync="setToleDialogVisible" width="50%" @close="setRoleDialogClosed" :close-on-click-modal="false">
            <div>
                <p>当前的用户:{{userInfo.username}}</p>
                <p>当前的角色:{{userInfo.role_name}}</p>
                <p>分配新角色：
                    <el-select v-model='selectedRoleId' placeholder="请选择">
                        <el-option
                                v-for="item in rolesList"
                                :key="item.id"
                                :label="item.roleName"
                                :value="item.id">
                        </el-option>
                    </el-select>
                </p>
            </div>

            <span slot="footer" class="dialog-footer">
                <el-button @click="setToleDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
            </span>
        </el-dialog>

    </div>
</template>

<script>
    export default {
        name: "Users",
        data() {
            // 验证邮箱的自定义规则
            var checkEmail = (rule, value, callback) => {
                // 验证邮箱的正则表达式
                const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/
                if (regEmail.test(value)) {
                    return callback()
                }
                callback(new Error("请输入合法的邮箱"))
            }

            // 验证手机号的自定义规则
            var checkMobile = (rule, value, callback) => {
                let reg = /^(0|86|17951)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/
                if (reg.test(value)) {
                    return callback()
                }
                callback(new Error("请输入合法的手机号"))
            }
            return {
                // 获取用户列表的参数对象
                queryInfo: {
                    query: '',
                    // 当前的页数
                    pagenum: 1,
                    // 当前每页显示多少条数据
                    pagesize: 2
                },
                userlist: [],
                total: 0,
                // 控制添加用户对话框的显示与隐藏
                addDialogVisible: false,
                // 添加用户的表单数据
                addForm: {
                    username: '',
                    password: '',
                    email: '',
                    mobile: ''
                },
                // 添加表单的验证规则
                addFormRules: {
                    username: [
                        {required: true, message: '请输入用户名', trigger: 'blur'},
                        {min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur'}
                    ],
                    password: [
                        {required: true, message: '请输入密码', trigger: 'blur'},
                        {min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur'}
                    ],
                    email: [
                        {required: true, message: '请输入邮箱', trigger: 'blur'},
                        {validator: checkEmail, trigger: 'blur'}
                    ],
                    mobile: [
                        {required: true, message: '请输入手机', trigger: 'blur'},
                        {validator: checkMobile, trigger: 'blur'}
                    ]
                },

                // 控制修改用户对话框的显示与隐藏
                editDialogVisible: false,

                // 查询到的用户信息对象
                editForm: {},

                // 修改表单的验证规则对象
                editFormRules: {
                    email: [
                        {required: true, message: '请输入邮箱', trigger: 'blur'},
                        {validator: checkEmail, trigger: 'blur'}
                    ],
                    mobile: [
                        {required: true, message: '请输入用户手机', trigger: 'blur'},
                        {validator: checkMobile, trigger: 'blur'}
                    ]
                },

                // 分配角色对话框的显示与隐藏
                setToleDialogVisible: false,

                // 需要被分配角色的用户信息
                userInfo: {},

                // 所有角色的数据列表
                rolesList: [],

                // 已选中的角色Id值
                selectedRoleId: ''

            }
        },
        created() {
            this.getUserList()
        },
        methods: {
            async getUserList() {
                const {data: res} = await this.$http.get('/users', {params: this.queryInfo})
                if (res.meta.status !== 200) return this.$message.error(res.meta.msg)
                this.userlist = res.data.users
                this.total = res.data.total

                console.log(this.userlist)
            },

            // 监听pagesieze改变的事件
            handleSizeChange(newSize) {
                this.queryInfo.pagesize = newSize
                this.getUserList()
            },

            // 监听页码值改变的事件
            handleCurrentChange(newPage) {
                this.queryInfo.pagenum = newPage
                this.getUserList()
            },

            // 监听用户状态
            async userStateChanged(userinfo) {
                const {data: res} = await this.$http.put(`users/${userinfo.id}/state/${userinfo.mg_state}`)
                if (res.meta.status !== 200) {
                    userinfo.mg_state = !userinfo.mg_state
                    return this.$message.error(res.meta.msg)
                }
                this.$message.success('更新用户状态成功')
            },

            // 监听添加用户对话框的关闭事件
            addDialogClosed() {
                this.$refs.addFormRef.resetFields()
            },

            // 点击按钮  添加新用户
            addUser() {
                console.log('dianjile')
                this.$refs.addFormRef.validate(async valid => {
                    console.log(valid)
                    if (!valid) return false

                    // 可以发起添加用户的网络请求
                    const {data: res} = await this.$http.post('users', this.addForm)
                    if(res.meta.status !== 201){
                        this.$message.error('添加用户失败')
                    }

                    this.$message.success('添加用户成功!')

                    // 隐藏添加用户的对话框
                    this.addDialogVisible = false

                    // 重新获取用户的列表数据
                    this.getUserList()
                })
            },

            // 展示编辑用户的对话框
            async showEditDialog(id) {
                const {data: res} = await this.$http.get('users/' + id)
                if(res.meta.status !== 200){
                    return this.$message.error('查询用户信息失败')
                }
                // console.log(res.data)
                this.editForm = res.data
                this.editDialogVisible = true
            },

            // 监听修改用户对话框的关闭时间
            editDialogClosed() {
                this.$refs.editFormRef.resetFields()
            },

            // 修改用户信息并提交
            editUserInfo() {
                this.$refs.editFormRef.validate( async valid => {
                    console.log(valid);
                    if(!valid) return false

                    // 发起修改用户信息的数据请求
                    const {data: res} = await this.$http.put('users/' + this.editForm.id, {
                        email: this.editForm.email,
                        mobile: this.editForm.mobile
                    })

                    if(res.meta.status !== 200) {
                        return this.$message.error('用户信息更新失败')
                    }
                    // 关闭对话框
                    this.editDialogVisible = false
                    // 刷新数据列表
                    this.getUserList()
                    // 提示修改成功
                    this.$message.success('用户信息修改成功')
                })
            },

            // 删除对话框
            async removeUserById(id){
                // 弹框询问用户是否删除数据
                const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '删除用户', {
                    confirmButtonText: '确定',
                    cancelButtonText: '取消',
                    type: 'warning'
                }).catch(err => {
                    return err
                })
                // 如果用户确认删除，则返回值为字符串，confirm
                // 如果用户取消了删除，则返回值为字符串，cancel

                if(confirmResult !== 'confirm'){
                    return this.$message.info('已取消删除')
                }

                const {data: res} = await this.$http.delete('users/'+ id)
                if(res.meta.status !== 200){
                    return this.$message.error('删除用户失败!')
                }
                this.$message.success('删除用户成功')
                this.getUserList()
            },

            // 展示分配角色的对话框
            async setRole(userInfo) {
                // console.log(userInfo);
                this.userInfo = userInfo;

                // 在展示对话框之前，获取所有角色的列表
                const {data: res} = await this.$http.get('roles')
                if(res.meta.status !== 200) {
                    return this.$message.error('获取角色列表失败')
                }
                this.rolesList = res.data
                this.setToleDialogVisible = true
            },

            // 点击按钮， 分配角色
            async saveRoleInfo() {
                // 判断是否选择角色
                if(!this.selectedRoleId) {
                    return this.$message.error('请选择要分配的角色!')
                }
                const {data: res} = await this.$http.put(`users/${this.userInfo.id}/role`, {
                    rid: this.selectedRoleId,
                    mobile: this.userInfo.mobile,
                    email: this.userInfo.email
                })
                if(res.meta.status !== 200) {
                    return this.$message.error(res.meta.msg)
                }
                this.$message.success(res.meta.msg)

                this.getUserList()
                this.setToleDialogVisible = false
            },

            // 监听分配橘色对话框的关闭事件
            setRoleDialogClosed() {
                this.selectedRoleId = ''
                this.userInfo = ''
            }
        }
    }
</script>

<style scoped>

</style>